多选题You want to take a complete database backup using RMAN. The backup should consist only the used blocks from your database. Which two statements are true about this backup operation? （）(Choose two.)ABackup compression should be enabledBParallelism for the channel should be set to 2CAll the files must be backed up as backup setsDThe backup may be stored either on disk or on media with media manager
多选题
You want to take a complete database backup using RMAN. The backup should consist only the used blocks from your database. Which two statements are true about this backup operation? （）(Choose two.)
A
Backup compression should be enabled
B
Parallelism for the channel should be set to 2
C
All the files must be backed up as backup sets
D
The backup may be stored either on disk or on media with media manager
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